IngentaConnect Decentralised robust flow controller design for networks with mul...

Authors: Munyas, Inci¹; Yelbasi, Ozen²; Biberovic, Enis³; Iftar, Altuğ²; Ozbay, Hitay⁴

Source: International Journal of Control, Volume 82, Number 1, January 2009 , pp. 95-116(22)

Abstract:

Decentralised rate-based flow controller design in multi-bottleneck data-communication networks is considered. An H∞ problem is formulated to find decentralised controllers which can be implemented locally at the bottleneck nodes. A suboptimal solution to this problem is found and the implementation of the decentralised controllers is presented. The controllers are robust to time-varying uncertain multiple time-delays in different channels. They also satisfy tracking and weighted fairness requirements. Lower bounds on the actual stability margins are derived and their relation to the design parameters is analysed. A number of simulations are also included to illustrate the time-domain performance of the proposed controllers.

Keywords: communication networks; flow control; robust control; decentralised control; time-delay systems; H∞ control

Document Type: Research article

DOI: 10.1080/00207170801993561

Affiliations: 1: Tusas Aerospace Industries Inc., Ankara, Turkey,Department of Electrical and Electronics Engineering, Anadolu University, Ankara, Turkey 2: Department of Electrical and Electronics Engineering, Anadolu University, Eskisehir, Turkey 3: HERMES SoftLab d.o.o., Sarajevo, Sarajevo, Bosnia and Herzegovina,Department of Electrical and Electronics Engineering, Anadolu University, Ankara, Turkey 4: Department of Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey

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Decentralised robust flow controller design for networks with multiple bottlenecks